Alkylated vicinal toluenediamines and their use as chain...

Details Alkylated vicinal toluenediamines and their use as chain... Alkylated vicinal toluenediamines and their use as chain...

C - Chemistry, Metallurgy

08

G

402/142, 403/34,

C08G 18/65 (2006.01) C08G 18/32 (2006.01) C07C 87/58 (1985.01) C08G 18/14 (1985.01)

Patent

CA 1265888

ABSTRACT OF THE DISCLOSURE: This invention relates to the preparation of polyurethane elastomers using alkylated vicinal toluene- diamines as chain extenders. This process comprises reacting: (a) an organic polyisocyanate, (b) one or more compounds with an average molecular weight of 1000 to 8000 having two or more active hydrogen atoms as determined by the Zerewitinoff method, and (c) from 5 to 40 parts of a mixture of alkylated vicinal toluenediamines of the following structural formulae: (a) Image , ( b) Image , (d) Image , (c) Image , and where R and R' independently represent a linear or non- linear alkyl radical having 1 to 4 carbon atoms, said parts being based upon 100 parts of (b) plus (c).

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